МР
Марина Ракова
x^2+y^2=5
x-y=1
x = y + 1
(y + 1)^2 + y^2 = 5
2y^2 + 2y - 4 = 0
y^2 + y - 2 = 0;
D = 1 + 8 = 9
y1 = (-1 + 3) / 2 = 1 => x1 = 2
y2 = (-1 - 3) / 2 = -2 => x2 = -1
Ответ: (2, 1) и (-1, -2)